WO2024071485A1 - Dispositif d'affichage et procédé de commande de dispositif d'affichage - Google Patents

Dispositif d'affichage et procédé de commande de dispositif d'affichage Download PDF

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Publication number
WO2024071485A1
WO2024071485A1 PCT/KR2022/014763 KR2022014763W WO2024071485A1 WO 2024071485 A1 WO2024071485 A1 WO 2024071485A1 KR 2022014763 W KR2022014763 W KR 2022014763W WO 2024071485 A1 WO2024071485 A1 WO 2024071485A1
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WO
WIPO (PCT)
Prior art keywords
external device
display device
display
power
request signal
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Application number
PCT/KR2022/014763
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English (en)
Korean (ko)
Inventor
이정주
김민식
박지원
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to PCT/KR2022/014763 priority Critical patent/WO2024071485A1/fr
Publication of WO2024071485A1 publication Critical patent/WO2024071485A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators

Definitions

  • This disclosure relates to a display device and a method of driving the display device.
  • This disclosure relates to a display device connected to an external device through an external device interface that provides an HDMI function, and a method of driving the same.
  • This disclosure relates to a display device connected to a plurality of external devices through an external device interface that provides an HDMI function, and a method of driving the same.
  • This disclosure relates to a display device connected to an external device, an external device interface that provides an HDMI function, and a network interface connected to a network, and a method of driving the same.
  • the display device may display content provided from an external device (e.g., set-top box, Blu-ray player, DVD player, etc.), and the display device may display content provided by an application (e.g., liveTV, OTT (Over The Top) etc.) can also be displayed.
  • an external device e.g., set-top box, Blu-ray player, DVD player, etc.
  • an application e.g., liveTV, OTT (Over The Top) etc.
  • HDMI High Definition Multimedia Interface
  • HDMI is an uncompressed digital video/audio interface standard that provides uncompressed, fully digital audio between display devices and audio/video devices equipped with HDMI, such as set-top boxes, Blu-ray players, DVD players, and A/V receivers. /Provides a video interface
  • HDMI provides HDMI-CEC (Consumer Electronics Control) function.
  • HDMI-CEC is a technology that allows multiple devices connected via HDMI to be controlled simultaneously with a single remote control device.
  • HDMI-CEC is a single-wire bidirectional serial bus based on the HDMI protocol.
  • the CEC function may operate unstable due to functional inconsistencies between product manufacturers or product types.
  • HDMI-CEC function allows the user to use the display device and the external device more conveniently, but errors may occur or actions unintended by the user may occur. There may be cases where the operation of the display device or external device stops.
  • the present disclosure provides a display device and a method of driving the display device that can prevent unintended operations from occurring in the display device being used by the user due to a control signal input from an external device connected to the display device.
  • the present disclosure provides that when the display device is turned off and there is a user's request to turn on the external device connected to the display device, the display device can process the power-on and input switching request signals input from the external device without being lost.
  • the display device can process the power-on and input switching request signals input from the external device without being lost.
  • the present disclosure provides a display device and a method of driving the display device that can quickly transmit control signals or data from the display device to an external device connected to the display device through a network or HDMI.
  • the display device and its driving method when a control signal is received from an external device through an external device interface, whether to process the received control signal for the display device according to the user's content viewing environment is determined. It can be performed adaptively.
  • a display device includes an external device interface; A display that displays content; When a power-off request signal is received from an external device connected through the external device interface, and it is determined that the content displayed on the display is not content provided by the external device, the power-off request signal received from the external device A controller that ignores signals and does not process them; may include.
  • the controller when the controller determines that the content displayed on the display is content provided from the external device, the controller displays the display in response to the power-off request signal received from the external device. Can handle device power off.
  • the external device interface and the external device are connected using the HDMI protocol, and the power-off request signal is transmitted through the HDMI-CEC (Consumer Electronics Control) power sink function of the external device. It can be transmitted by .
  • HDMI-CEC Consumer Electronics Control
  • the external device connected through the external device interface includes a first external device and a second external device, and content provided from the first external device is displayed on the display.
  • the controller may ignore the power-off request signal and not process it.
  • the controller Power-off of the display device may be processed in response to a turn-off request signal.
  • the content displayed on the display may be running in the foreground on the display.
  • the controller when the content displayed on the display is displayed by a content providing application provided by the display device, the controller ignores the power-off request signal and does not process it. You can.
  • the controller responds to a control signal received from the external device connected through the external device interface and responds to the received control signal according to the manufacturer of the external device or the type of the external device. You can determine whether to process and process by filtering.
  • a display device includes a memory that stores an input switching request signal received from the external device connected through the external device interface, and the controller is configured to operate on the external device when the display device is turned off.
  • the controller is configured to operate on the external device when the display device is turned off.
  • the display device further includes a network interface connected to a network, and the controller transmits data to the external device when the external device connected through the external device interface is also connected through the network interface. Control signals or data may be transmitted through the network interface.
  • the method includes receiving a power-off request signal from an external device connected through an external device interface; A controller determining whether the content displayed on the display is content provided from the external device; When the controller determines that the content displayed on the display is not content provided from the external device, ignoring and not processing the power-off request signal received from the external device; may include.
  • the controller when the controller determines that the content displayed on the display is content provided from the external device, the controller responds to the power-off request signal received from the external device.
  • the controller responds to the power-off request signal received from the external device.
  • power-off of the display device can be processed.
  • the external device interface and the external device are connected using the HDMI protocol, and the power-off request signal is transmitted through HDMI-CEC (Consumer Electronics Control) of the external device. It can be transmitted by the power sink function.
  • HDMI-CEC Consumer Electronics Control
  • the power-off request signal is transmitted to the external device interface.
  • the controller may ignore the power-off request signal and not process it.
  • the controller may process power off of the display device in response to the power off request signal.
  • the content displayed on the display may be driven in the foreground on the display.
  • the controller when the content displayed on the display is displayed by a content providing application provided by the display device, the controller ignores the power-off request signal and It may not be processed.
  • the controller receives the control signal received from the external device connected through the external device interface according to the manufacturer of the external device or the type of the external device. It is possible to determine whether to process the control signal and process it by filtering.
  • the controller when a power-on request signal and an input switching request signal are received from the external device while the display device is turned off, the controller responds to the power-on request signal.
  • the input switch request signal is stored in a memory while processing initialization of the display device, and when initialization of the display device is completed, the controller switches the input to the external device corresponding to the input switch request signal stored in the memory. can be processed.
  • the controller when the external device connected through the external device interface is also connected through a network interface connected to a network, the controller transmits a control signal to the external device or Data can be transmitted through the network interface.
  • the display device and the method of driving the display device it is possible to prevent an operation unintended by the user from occurring in the display device being used by a control signal input from an external device connected to the display device. You can.
  • the display device and the method of driving the display device when the display device is turned off and there is a user's request to turn on the external device connected to the display device, input is input from the external device to the display device. Signals for power-on and input switching requests can be processed without being lost.
  • a display device and a method of driving the display device it is possible to quickly transmit a control signal or data from the display device to an external device connected to the display device through a network or HDMI.
  • FIG. 1 is a block diagram showing a display device according to an embodiment of the present disclosure.
  • Figure 2 is a block diagram of a remote control device according to an embodiment of the present disclosure.
  • Figure 3 shows an example of the actual configuration of a remote control device according to an embodiment of the present disclosure.
  • Figure 4 shows an example of utilizing a remote control device according to an embodiment of the present disclosure.
  • Figure 5 is a block diagram illustrating a display device according to an embodiment of the present disclosure.
  • FIG. 6 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.
  • Figure 7 is a diagram explaining the input/output configuration of HDMI according to an embodiment of the present disclosure.
  • FIG. 8 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.
  • Figure 9 is a block diagram illustrating a display device according to an embodiment of the present disclosure.
  • FIG. 10 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.
  • Figure 11 is a block diagram illustrating a display device according to an embodiment of the present disclosure.
  • FIG. 12 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.
  • the display device is, for example, an intelligent display device that adds a computer support function to the broadcast reception function, and is faithful to the broadcast reception function while adding an Internet function, etc., and includes a handwriting input device and a touch screen.
  • a more convenient interface such as a spatial remote control.
  • by supporting wired or wireless Internet functions it is possible to connect to the Internet and a computer and perform functions such as email, web browsing, banking, or gaming.
  • a standardized general-purpose OS can be used for these various functions.
  • the display device for example, various applications can be freely added or deleted on a general-purpose OS kernel, so various user-friendly functions can be performed.
  • the display device may be, for example, a network TV, HBBTV, smart TV, LED TV, OLED TV, etc., and in some cases, may also be applied to a smartphone.
  • FIG. 1 is a block diagram showing the configuration of a display device according to an embodiment of the present disclosure.
  • the display device 100 includes a broadcast receiver 130, an external device interface 135, a memory 140, a user input interface 150, a controller 170, a wireless communication interface 173, and a display. It may include (180), a speaker (185), and a power supply circuit (190).
  • the broadcast receiver 130 may include a tuner 131, a demodulator 132, and a network interface 133.
  • the tuner 131 can select a specific broadcast channel according to a channel selection command.
  • the tuner 131 may receive a broadcast signal for a specific selected broadcast channel.
  • the demodulator 132 can separate the received broadcast signal into a video signal, an audio signal, and a data signal related to the broadcast program, and can restore the separated video signal, audio signal, and data signal to a form that can be output.
  • the external device interface 135 may receive an application or application list within an adjacent external device and transfer it to the controller 170 or memory 140.
  • the external device interface 135 may provide a connection path between the display device 100 and an external device.
  • the external device interface 135 may receive one or more of video and audio output from an external device connected wirelessly or wired to the display device 100 and transmit it to the controller 170.
  • the external device interface 135 may include a plurality of external input terminals.
  • the plurality of external input terminals may include an RGB terminal, one or more High Definition Multimedia Interface (HDMI) terminals, and a component terminal.
  • HDMI High Definition Multimedia Interface
  • An image signal from an external device input through the external device interface 135 may be output through the display 180.
  • a voice signal from an external device input through the external device interface 135 may be output through the speaker 185.
  • An external device that can be connected to the external device interface 135 may be any one of a set-top box, Blu-ray player, DVD player, game console, sound bar, smartphone, PC, USB memory, or home theater, but this is only an example.
  • the network interface 133 may provide an interface for connecting the display device 100 to a wired/wireless network including an Internet network.
  • the network interface 133 may transmit or receive data with other users or other electronic devices through a connected network or another network linked to the connected network.
  • some of the content data stored in the display device 100 may be transmitted to a selected user or selected electronic device among other users or other electronic devices pre-registered in the display device 100.
  • the network interface 133 can access a certain web page through a connected network or another network linked to the connected network. In other words, you can access a certain web page through a network and transmit or receive data with the corresponding server.
  • the network interface 133 can receive content or data provided by a content provider or network operator. That is, the network interface 133 can receive content and information related thereto, such as movies, advertisements, games, VODs, and broadcast signals, provided from a content provider or network provider through a network.
  • the network interface 133 can receive firmware update information and update files provided by a network operator, and can transmit data to the Internet, a content provider, or a network operator.
  • the network interface 133 can select and receive a desired application from among applications open to the public through a network.
  • the memory 140 stores programs for processing and controlling each signal in the controller 170, and can store processed video, audio, or data signals.
  • the memory 140 may perform a function for temporary storage of video, voice, or data signals input from the external device interface 135 or the network interface 133, and may store information about a predetermined image through a channel memory function. You can also store information.
  • the memory 140 may store an application or application list input from the external device interface 135 or the network interface 133.
  • the display device 100 can play content files (video files, still image files, music files, document files, application files, etc.) stored in the memory 140 and provide them to the user.
  • content files video files, still image files, music files, document files, application files, etc.
  • the user input interface 150 may transmit a signal input by the user to the controller 170 or transmit a signal from the controller 170 to the user.
  • the user input interface 150 may be used remotely according to various communication methods such as Bluetooth, Ultra Wideband (UWB), ZigBee, Radio Frequency (RF) communication, or Infrared (IR) communication.
  • Control signals such as power on/off, channel selection, and screen settings can be received and processed from the control device 200, or control signals from the controller 170 can be processed to be transmitted to the remote control device 200.
  • the user input interface 150 can transmit control signals input from local keys (not shown) such as power key, channel key, volume key, and setting value to the controller 170.
  • local keys such as power key, channel key, volume key, and setting value
  • the video signal processed by the controller 170 may be input to the display 180 and displayed as an image corresponding to the video signal. Additionally, the image signal processed by the controller 170 may be input to an external output device through the external device interface 135.
  • the voice signal processed by the controller 170 may be output as audio to the speaker 185. Additionally, the voice signal processed by the controller 170 may be input to an external output device through the external device interface 135.
  • controller 170 may control overall operations within the display device 100.
  • controller 170 can control the display device 100 by a user command or internal program input through the user input interface 150, and connects to the network to display the application or application list desired by the user on the display device ( 100) You can make it available for download.
  • the controller 170 allows channel information selected by the user to be output through the display 180 or speaker 185 along with the processed video or audio signal.
  • the controller 170 controls video signals from an external device, for example, a camera or camcorder, input through the external device interface 135, according to an external device video playback command received through the user input interface 150.
  • the voice signal can be output through the display 180 or speaker 185.
  • the controller 170 can control the display 180 to display an image, for example, a broadcast image input through the tuner 131, an external input image input through the external device interface 135, Alternatively, an image input through the network interface unit or an image stored in the memory 140 may be controlled to be displayed on the display 180.
  • the image displayed on the display 180 may be a still image or a moving image, and may be a 2D image or a 3D image.
  • controller 170 can control the playback of content stored in the display device 100, received broadcast content, or external input content from outside.
  • the content may include broadcast video, external input video, audio files, It can be in various forms, such as still images, connected web screens, and document files.
  • the wireless communication interface 173 can communicate with external devices through wired or wireless communication.
  • the wireless communication interface 173 can perform short range communication with an external device.
  • the wireless communication interface 173 includes BluetoothTM, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), and Wi-Fi.
  • Short-distance communication can be supported using at least one of Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies.
  • This wireless communication interface 173 is between the display device 100 and a wireless communication system, between the display device 100 and another display device 100, or between the display device 100 through wireless area networks. It can support wireless communication between the network and the display device 100 (or external server).
  • Local area wireless networks may be wireless personal area networks.
  • the other display device 100 is a wearable device capable of exchanging data with (or interoperable with) the display device 100 according to the present disclosure, for example, a smartwatch, smart glasses. It can be a mobile terminal such as (smart glass), HMD (head mounted display), or smart phone.
  • the wireless communication interface 173 may detect (or recognize) a wearable device capable of communication around the display device 100 .
  • the controller 170 sends at least a portion of the data processed by the display device 100 to the wireless communication interface 173. It can be transmitted to a wearable device through . Accordingly, a user of a wearable device can use data processed by the display device 100 through the wearable device.
  • the display 180 converts the video signal, data signal, and OSD signal processed by the controller 170 or the video signal and data signal received from the external device interface 135 into R, G, and B signals, respectively, and provides a driving signal. can be created.
  • the display device 100 shown in FIG. 1 is only an example of the present disclosure. Some of the illustrated components may be integrated, added, or omitted depending on the specifications of the display device 100 that is actually implemented.
  • two or more components may be combined into one component, or one component may be subdivided into two or more components.
  • the functions performed in each block are for explaining embodiments of the present disclosure, and the specific operations or devices do not limit the scope of the present disclosure.
  • the display device 100 does not have a tuner 131 and a demodulator 132 and has a network interface 133 or an external device interface 135. You can also receive and play video through the device.
  • the display device 100 is divided into an image processing device such as a set-top box for receiving broadcast signals or contents according to various network services, and a content playback device for playing content input from the image processing device. It can be implemented.
  • an image processing device such as a set-top box for receiving broadcast signals or contents according to various network services
  • a content playback device for playing content input from the image processing device. It can be implemented.
  • the method of operating a display device includes not only the display device 100 as described with reference to FIG. 1, but also an image processing device such as the separated set-top box or the display 180. ) and a content playback device having an audio output unit 185.
  • FIG. 2 is a block diagram of a remote control device according to an embodiment of the present disclosure
  • FIG. 3 shows an example of the actual configuration of the remote control device 200 according to an embodiment of the present disclosure.
  • the remote control device 200 includes a fingerprint reader 210, a wireless communication circuit 220, a user input interface 230, a sensor 240, an output interface 250, and a power supply circuit ( 260), memory 270, controller 280, and microphone 290.
  • the wireless communication circuit 220 transmits and receives signals to and from any one of the display devices according to the embodiments of the present disclosure described above.
  • the remote control device 200 has an RF circuit 221 capable of transmitting and receiving signals to and from the display device 100 in accordance with RF communication standards, and is capable of transmitting and receiving signals to and from the display device 100 in accordance with IR communication standards.
  • An IR circuit 223 may be provided.
  • the remote control device 200 may be provided with a Bluetooth circuit 225 capable of transmitting and receiving signals to and from the display device 100 according to the Bluetooth communication standard.
  • the remote control device 200 is provided with an NFC circuit 227 capable of transmitting and receiving signals to the display device 100 according to the NFC (Near Field Communication) communication standard, and displays the display device 100 according to the WLAN (Wireless LAN) communication standard.
  • a WLAN circuit 229 capable of transmitting and receiving signals to and from the device 100 may be provided.
  • the remote control device 200 transmits a signal containing information about the movement of the remote control device 200 to the display device 100 through the wireless communication circuit 220.
  • the remote control device 200 can receive a signal transmitted by the display device 100 through the RF circuit 221 and, if necessary, turn on/off the display device 100 through the IR circuit 223. Commands for turning off, changing channels, changing volume, etc. can be sent.
  • the user input interface 230 may be comprised of a keypad, button, touch pad, or touch screen.
  • the user can input commands related to the display device 100 into the remote control device 200 by manipulating the user input interface 230. If the user input interface 230 has a hard key button, the user can input a command related to the display device 100 to the remote control device 200 through a push operation of the hard key button. This will be explained with reference to FIG. 3 .
  • the remote control device 200 may include a plurality of buttons.
  • the plurality of buttons include a fingerprint recognition button (212), power button (231), home button (232), live button (233), external input button (234), volume control button (235), voice recognition button (236), It may include a channel change button 237, a confirmation button 238, and a back button 239.
  • the fingerprint recognition button 212 may be a button for recognizing the user's fingerprint.
  • the fingerprint recognition button 212 is capable of a push operation and may receive a push operation and a fingerprint recognition operation.
  • the power button 231 may be a button for turning on/off the power of the display device 100.
  • the home button 232 may be a button for moving to the home screen of the display device 100.
  • the live button 233 may be a button for displaying a real-time broadcast program.
  • the external input button 234 may be a button for receiving an external input connected to the display device 100.
  • the volume control button 235 may be a button for adjusting the volume of the sound output by the display device 100.
  • the voice recognition button 236 may be a button for receiving the user's voice and recognizing the received voice.
  • the channel change button 237 may be a button for receiving a broadcast signal of a specific broadcast channel.
  • the confirmation button 238 may be a button for selecting a specific function, and the back button 239 may be a button for returning to the previous screen.
  • the user input interface 230 has a touch screen, the user can input commands related to the display device 100 through the remote control device 200 by touching a soft key on the touch screen. Additionally, the user input interface 230 may include various types of input means that the user can operate, such as scroll keys and jog keys, and this embodiment does not limit the scope of the present disclosure.
  • the sensor 240 may include a gyro sensor 241 or an acceleration sensor 243, and the gyro sensor 241 may sense information about the movement of the remote control device 200.
  • the gyro sensor 241 can sense information about the operation of the remote control device 200 based on the x, y, and z axes, and the acceleration sensor 243 measures the moving speed of the remote control device 200. Information about such things can be sensed.
  • the remote control device 200 may further include a distance measurement sensor and can sense the distance from the display 180 of the display device 100.
  • the output interface 250 may output a video or audio signal corresponding to a manipulation of the user input interface 230 or a signal transmitted from the display device 100.
  • the user can recognize whether the output interface 250 is manipulating the user input interface 230 or controlling the display device 100.
  • the output interface 250 includes an LED 251 that turns on when the user input interface 230 is manipulated or a signal is transmitted and received with the display device 100 through the wireless communication unit 225, and a vibrator 253 that generates vibration. ), a speaker 255 that outputs sound, or a display 257 that outputs an image.
  • the power supply circuit 260 supplies power to the remote control device 200, and power waste can be reduced by stopping power supply when the remote control device 200 does not move for a predetermined period of time.
  • the power supply circuit 260 can resume power supply when a predetermined key provided in the remote control device 200 is operated.
  • the memory 270 may store various types of programs, application data, etc. necessary for controlling or operating the remote control device 200.
  • the remote control device 200 transmits and receives signals wirelessly through the display device 100 and the RF circuit 221, the remote control device 200 and the display device 100 transmit and receive signals through a predetermined frequency band. .
  • the controller 280 of the remote control device 200 stores and references information about the display device 100 paired with the remote control device 200 and the frequency band capable of wirelessly transmitting and receiving signals in the memory 270. You can.
  • the controller 280 controls all matters related to the control of the remote control device 200.
  • the controller 280 sends a signal corresponding to a predetermined key operation of the user input interface 230 or a signal corresponding to the movement of the remote control device 200 sensed by the sensor 240 through the wireless communication unit 225. 100).
  • the microphone 290 of the remote control device 200 can acquire voice.
  • a plurality of microphones 290 may be provided.
  • Figure 4 shows an example of utilizing a remote control device according to an embodiment of the present disclosure.
  • FIG. 4 illustrates that a pointer 205 corresponding to the remote control device 200 is displayed on the display 180.
  • the user can move or rotate the remote control device 200 up and down, left and right.
  • the pointer 205 displayed on the display 180 of the display device 100 corresponds to the movement of the remote control device 200.
  • This remote control device 200 can be called a spatial remote control because the corresponding pointer 205 is moved and displayed according to movement in 3D space, as shown in the drawing.
  • FIG. 4 illustrates that when the user moves the remote control device 200 to the left, the pointer 205 displayed on the display 180 of the display device 100 also moves to the left correspondingly.
  • the display device 100 may calculate the coordinates of the pointer 205 from information about the movement of the remote control device 200.
  • the display device 100 may display the pointer 205 to correspond to the calculated coordinates.
  • FIG. 4 illustrates a case where a user moves the remote control device 200 away from the display 180 while pressing a specific button in the remote control device 200.
  • the selected area in the display 180 corresponding to the pointer 205 can be zoomed in and displayed enlarged.
  • the selected area in the display 180 corresponding to the pointer 205 may be zoomed out and displayed in a reduced size.
  • the selected area may be zoomed out, and when the remote control device 200 approaches the display 180, the selected area may be zoomed in.
  • the moving speed or direction of the pointer 205 may correspond to the moving speed or direction of the remote control device 200.
  • a pointer in this specification refers to an object displayed on the display 180 in response to the operation of the remote control device 200.
  • the pointer 205 can be an object of various shapes other than the arrow shape shown in the drawing.
  • concepts may include dots, cursors, prompts, thick outlines, etc.
  • the pointer 205 can be displayed not only in response to one of the horizontal and vertical axes on the display 180, but also in response to multiple points, such as a line or surface. .
  • FIG. 5 is a block diagram illustrating a display device according to an embodiment of the present disclosure
  • FIG. 6 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.
  • the display device 100 may include an external device interface 135, a controller 170, and a display 180, as shown in FIG. 5.
  • the display device 100 can be connected to an external device through the external device interface 135.
  • the display device 100 can be connected to a plurality of external devices.
  • the display device 100 and an external device may be connected using the High Definition Multimedia Interface (HDMI) protocol.
  • HDMI High Definition Multimedia Interface
  • FIG. 5 shows a case where the display device 100 is connected to the first external device 510 and the second external device 520 through the external device interface 135.
  • the display device 100 may not be connected to an external device, may be connected to one external device, or may be connected to three or more external devices.
  • External devices can be independently selected from devices including set-top boxes (STBs), Blu-ray players, DVD players, game consoles, sound bars, etc.
  • STBs set-top boxes
  • Blu-ray players Blu-ray players
  • DVD players DVD players
  • game consoles sound bars, etc.
  • the external device interface 135 may provide a connection path between the display device 100 and an external device.
  • the external device interface 135 can receive content output from an external device to the display device 100 and transmit it to the controller 170.
  • Content may include one or more of video and audio.
  • the first external device 510 connected to the external device interface 135 may be a set-top box
  • the second external device 520 connected through the external device interface 135 may be a Blu-ray player.
  • the controller 170 may display the received content on the display 180.
  • the controller 170 may display content received through the first external device 510, for example, a set-top box, on the display 180. Additionally, the controller 170 can display content received through a second external device 520, for example, a Blu-ray player, on the display 180.
  • the controller 170 may receive a control request signal for the display device 100 from the first external device 510 or the second external device 520 through the external device interface 135.
  • the control request signal may include a power-off request signal, a power-on request signal, a volume control request signal, and a channel change request signal.
  • the user may, for example, select the “TV” mode in the input signal setting mode of “TV/external input” or select the “external input” mode.
  • the user can select an external device to receive content from among external devices connected through the external device interface 135.
  • the display device 100 receives content from the set-top box, which is the first external device 510, and displays ( 180).
  • the display device 100 When the user selects the Blu-ray player, which is the second external device 520, in the “external input” mode, the display device 100 receives content from the Blu-ray player, which is the second external device 520, and displays it on the display 180. It can be displayed in .
  • the user can select the “TV channel” or “content providing application” provided by the display device 100.
  • Content providing applications may include liveTV, OTT (Over The Top), etc.
  • Users can choose the Netflix app as an example of OTT.
  • content provided by the Netflix app may be displayed on the display 180.
  • the display device 100 may display content provided from an external device depending on the input signal setting mode, and a content providing application provided by the display device 100 regardless of connection to the external device. Content can also be displayed through, etc.
  • the user selects content provided through a content provision application of the display device 100, for example, the Netflix app. may be displayed on the display 180.
  • a content provision application of the display device 100 for example, the Netflix app.
  • the set-top box which is the first external device 510 connected through the external device interface 135, is left unused for that amount of time.
  • the set-top box can provide a function to automatically switch to standby mode or automatically turn off the power if the user's set-top box remains unused for a certain period of time.
  • the set-top box may transmit a power-off request signal to the display device 100.
  • the first external device 510 may transmit a power-off request signal to the display device 100 through the external device interface 135.
  • the power-off request signal may be transmitted by the HDMI-CEC (Consumer Electronics Control) power sync function.
  • Figure 7 is a diagram explaining the input/output configuration of HDMI according to an embodiment of the present disclosure.
  • HDMI is an interface that transmits digital video signals and digital audio signals, which were previously transmitted separately through DVI and S/PDIF, through a single cable without compression.
  • HDMI can include three Transition Minimized Differential Signaling (TMDS) data channels (0, 1, 2), a TMDS clock channel, a DDC channel, a CEC line, and power (+5V).
  • TMDS Transition Minimized Differential Signaling
  • the digital video signal that is, each video signal component of RGB and YCbCr, and the audio signal are synthesized in the three TMDS data channels (0, 1, and 2) in the form of a packet.
  • the power (+5V) is configured so that an external device can read the EDID (Extended Display Identification Data) information of the display device through the DDC (Display Data Channel) even when the display device is turned off.
  • the external device 710 includes an HDMI transmitter for synthesizing and transmitting digital video signals and digital audio signals in packet form, and the display device 720 receives the packets and Includes an HDMI receiver to separate digital video signals and digital audio signals.
  • the display device 100 and its driving method when a power-off request signal is received from an external device through the external device interface 135, the display is displayed according to the user's content viewing environment. A method for adaptively processing whether the device 100 is powered off is presented.
  • the controller 170 of the display device 100 controls the content displayed on the display 180. Determine whether content is provided from an external device, for example, a set-top box.
  • Content displayed on the display 180 may refer to content being driven and displayed in the foreground on the display 180.
  • the external device interface 135 and an external device, such as a set-top box are connected using the HDMI protocol, and a power-off request signal is transmitted by the HDMI-CEC (Consumer Electronics Control) power sink function of the external device, such as a set-top box. It can be. Additionally, the power-off request signal input from the set-top box may be a signal transmitted by operating the power-off button of the remote control device of the set-top box.
  • HDMI-CEC Consumer Electronics Control
  • the controller 170 may ignore and not process the power-off request signal received from the set-top box.
  • the display device 100 may not perform processing corresponding to a power-off request signal received from an external device, for example, a set-top box, and may continue to display content currently being displayed on the display 180 without stopping. Accordingly, the user can continue to view content displayed on the display 180.
  • an external device for example, a set-top box
  • the controller 170 may ignore the received power-off request signal and not process it. The controller 170 may continue to display content being provided by the content providing application on the display 180.
  • the controller 170 determines that the content being displayed on the display 180 is content provided from an external device, such as a set-top box, the controller 170 responds to a power-off request signal received from the external device, such as a set-top box, to display the display device 100. ) can handle power off.
  • the controller 170 of the display device 100 when a power-off request signal is received from an external device connected through the external device interface 135, for example, a set-top box, the display device ( 100), the input signal setting mode of “TV/external input” can be checked, and whether to process the received power-off request signal can be adaptively determined according to the input signal setting mode of the display device 100.
  • the controller 170 may ignore and not process a power-off request signal received from an external device, for example, a set-top box.
  • the display device 100 may not perform processing corresponding to a power-off request signal received from an external device, for example, a set-top box, and may continue to display content currently being displayed on the display 180 without stopping. Accordingly, the user can continue to view content displayed on the display 180.
  • an external device for example, a set-top box
  • the controller 170 may ignore the received power-off request signal and not process it. The controller 170 may continue to display content being provided by the content providing application on the display 180.
  • the controller 170 determines that the input signal setting mode of the display device 100 is selected as “external input” mode and that the content displayed on the display 180 is content provided from an external device, for example, a set-top box.
  • Power-off of the display device 100 may be processed in response to a power-off request signal received from an external device, for example, a set-top box.
  • an external device connected through the external device interface 135 may include a plurality of external devices, for example, a first external device 510 and a second external device 520. .
  • the external device interface 135 includes a first external device (eg, a set-top box) 510 and a second external device (eg, a Blu-ray player) 520. ) will be examined further based on the case where it is connected.
  • a first external device eg, a set-top box
  • a second external device eg, a Blu-ray player
  • the controller 170 controls the second external device connected through the external device interface 135.
  • the received power-off request signal may be ignored and not processed.
  • the controller 170 when content provided through a set-top box is displayed on the display 180 and a power-off request signal is received from the Blu-ray player, the controller 170 performs processing corresponding to the received power-off request signal. Otherwise, content provided through the set-top box can continue to be displayed on the display 180.
  • the controller 170 When content provided from the first external device 510 is displayed on the display 180, the controller 170 responds to the power-off request signal when a power-off request signal is received from the first external device 510. In response, power-off of the display device 100 may be processed.
  • the controller 170 controls the display device 100 in response to the received power-off request signal. ) can handle power off.
  • the display device and its driving method when a power-off request signal is received from an external device through an external device interface, whether or not the display device is turned off can be adaptively performed according to the user's content viewing environment. There is an advantage.
  • the display device and its driving method when a power-off request signal is received from an external device through an external device interface, the display device is turned off, contrary to the user's intention to use the display device. There is an advantage in preventing this from happening.
  • the volume control or channel change of the display device 100 is operated by a key operation input from an unauthorized external device, causing the user to malfunction the display device 100. Let's take a closer look at the display device and its driving method that can prevent it from being recognized as being used.
  • FIG. 8 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.
  • the display device 100 processes a control request received through an HDMI-CEC packet from an external device connected through the external device interface 135.
  • the controller 170 responds to the received control request, and displays the display device 100. You can adjust the volume or change the channel.
  • the display device and its driving method according to the embodiment it is possible to provide a function for filtering and processing key operations requested from an external device according to the manufacturer and device type of the external device.
  • the controller 170 receives control signals received from external devices 510 and 520 connected through the external device interface 135 according to the manufacturer of the external devices 510 and 520 or the type of the external devices 510 and 520. It is possible to determine whether to process the control signal and process it by filtering.
  • the controller 170 may process volume adjustment or channel change of the display device 100 in response to a volume adjustment or channel change control signal input from an authorized external device such as a set-top box.
  • the controller 170 may ignore and not process the received control signal such as volume control or channel change.
  • the controller 170 responds to a control request for the display device 100 received from the external device through an authorization process for the manufacturer of the external device or the type of the external device.
  • a filtering function can be provided to perform the corresponding operation or ignore the control request.
  • the display device and its driving method according to the embodiment it is possible to prevent volume adjustment or channel change of the display device 100 from being processed by key operations input from an unauthorized external device.
  • the display device and its driving method according to the embodiment it is possible to prevent a malfunction in the display device 100 due to a key operation input from an unauthorized external device.
  • FIG. 9 is a block diagram illustrating a display device according to an embodiment of the present disclosure
  • FIG. 10 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.
  • the display device 100 may include a controller 170, an external device interface 135, a memory 140, and a display 180.
  • a plurality of external devices such as a first external device 510, a set-top box and a second external device 520, such as a Blu-ray player, can be connected to the display device 100 through the external device interface 135. there is.
  • a user may turn on an external device, such as a set-top box, while turning off the display device 100.
  • an external device such as a set-top box
  • the external device e.g., set-top box
  • the external device e.g., set-top box
  • the external device e.g., set-top box
  • the controller 170 of the display device 100 first turns on the display device 100 and performs initialization in order to perform processing in response to a power-on and input switching request received from an external device (e.g., a set-top box). do.
  • an external device e.g., a set-top box
  • the controller 170 performs processing in response to an input switching request received from an external device (eg, a set-top box).
  • the display device 100 provides a connection state for receiving content or control signals from an external device (eg, a set-top box), or displays a screen to which an external device (eg, a set-top box) is connected. It can be displayed in .
  • the display device 100 is connected to the external device (for example, a set-top box). It becomes impossible to provide a status that responds to an input conversion request sent from a box).
  • an external device for example, a set-top box
  • the controller 170 of the display device 100 turns on the power of the display device 100 and performs initialization in response to a received power-on request signal, and then displays the screen in the last state just before turning off the display device 100. can be displayed on the display 180.
  • the operating state of the display device 100 and the external device for example, a set-top box
  • the external device for example, a set-top box
  • an input change request message is processed using the memory 140 of the display device 100.
  • the controller 170 of the display device 100 may include a memory 140 that stores an input switching request signal received from an external device (eg, a set-top box) connected through the external device interface 135.
  • an external device eg, a set-top box
  • the controller 170 controls the display device 100 in response to the power-on request signal. Turn on the power and process initialization. Then, when initialization of the display device 100 is completed, the controller 170 processes input switching to an external device (eg, a set-top box) corresponding to the input switching request signal stored in the memory 140.
  • an external device e.g, a set-top box
  • the input change request message transmitted from the external device (e.g., set-top box) to the display device 100 until the initialization of the display device 100 is completed. This can prevent situations where the message is partially lost or not completely delivered.
  • the display device 100 provides a connection state for receiving content or control signals from an external device (eg, a set-top box) or displays a screen to which an external device (eg, a set-top box) is connected. ) can be displayed.
  • an external device eg, a set-top box
  • displays a screen to which an external device eg, a set-top box
  • FIG. 11 is a block diagram illustrating a display device according to an embodiment of the present disclosure
  • FIG. 12 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.
  • the display device 100 includes a controller 170, an external device interface 135 connected to an external device, a network interface 133 connected to a network, and a display that displays content. It may include (180).
  • the network interface 133 may provide an interface for connecting the display device 100 to a wired/wireless network including an Internet network.
  • the network interface 133 may transmit or receive data with other users or other electronic devices through a connected network or another network linked to the connected network.
  • the display device 100 may be connected to an external device through the external device interface 135. Additionally, the display device 100 may be connected to an external device through the network interface 133.
  • An external device connected to the display device 100 may be connected to the display device 100 through at least one of the external device interface 135 and the network interface 133.
  • the first external device 510 may be connected to the display device 100 through both the external device interface 135 and the network interface 133.
  • the second external device 520 may be connected to the display device 100 through the network interface 133.
  • the controller 170 of the display device 100 may detect an external device (eg, the first external device 510) connected through the external device interface 135.
  • the controller 170 may detect an external device (eg, the first external device 510 and the second external device 520) connected through the network interface 133.
  • the controller 170 may transmit a control signal or data to the first external device 510 through the external device interface 135.
  • the controller 170 may transmit a control signal or data to the first external device 510 through HDMI-CEC.
  • the controller 170 may transmit a control signal or data to the first external device 510 through the network interface 133.
  • the controller 170 may transmit a control signal or data to the first external device 510 through a connected wired/wireless network.
  • the control signal or data transmission speed through the wired/wireless network of the network interface 133 is faster than the control signal or data transmission speed through HDMI-CEC of the external device interface 135.
  • Control signal or data transmission using HDMI-CEC in the external device interface 135 uses one pin to process reception/transmission as unidirectional communication. Accordingly, when using HDMI-CEC, reception and transmission cannot be processed simultaneously. Additionally, in the case of HDMI-CEC, all external devices connected to the external device interface 135 commonly use one CEC line. Therefore, when one external device connected to the external device interface 135 uses the CEC line, other external devices connected to the external device interface 135 cannot use the CEC line until the CEC line becomes idle. For example, HDMI-CEC has a transmission speed of 27.7 msec to 28.5 msec per byte. HDMI-CEC can transmit approximately 35.7 bytes per second.
  • Control signals or data transmission using the network interface 133 can be transmitted simultaneously in both directions through a connected network.
  • the transmission speed through the network interface 133 may vary depending on the network connection environment, but if the network provides a transmission speed of 100Mbps, approximately 12 megabytes per second can be transmitted.
  • the controller 170 of the display device 100 is connected to the first external device 510.
  • Control signals or data transmitted to can be transmitted through a network interface.
  • the control signal or data transmitted through HDMI-CEC of the external device interface is transmitted to the network interface. It can be transmitted quickly through .
  • the controller 170 of the display device 100 is connected to an external device not only through the network interface 133 but also through the external device interface 135. can be detected.
  • the display device 100 can receive a unique ID from a first external device connected to HDMI through the external device interface 135 (UniqueID by HDMI).
  • the display device 100 may request information from external devices connected to the network through the network interface 133 (Network Search).
  • the first external device is connected to the display device 100 through HDMI and a network
  • the second external device is connected to the display device 100 only through the network
  • the third external device is connected to the display device 100 only through the network.
  • External devices connected to the network interface 133 may reply to the display device 100 with their own unique ID in response to a request from the display device 100 (UniqueID by Network).
  • external devices connected to the network may broadcast or multicast their own unique ID when they are detected to be connected to the network, even without a request from the display device 100.
  • the display device 100 compares the unique ID information of each external device received from external devices connected to the external device interface 135 with the unique ID information of each external device received from external devices connected to the network interface 133. , external devices connected not only to the external device interface 135 but also to the network interface 133 can be detected (Detect Device#1 Device HDMI Connected).
  • the display device 100 compares the unique ID (UniqueID by HBMI) of the first external device 510 connected through HDMI and the unique ID (UniqueID by Network) of the first external device 510 connected through a network (for example, the same ID ), it can be confirmed that the first external device 510 is a device connected to the display device 100 not only through the network but also through HDMI.
  • the display device 100 transmits network-based commands (e.g., control signals) through the network interface 133 to external devices that conventionally had to transmit HDMI-based limited commands (e.g., control signals or data) through the external device interface 135.
  • Network-based commands e.g., control signals
  • HDMI-based limited commands e.g., control signals or data
  • Signals or data can be transmitted at high speed (Transmit Command and Data using Network).
  • the unique ID information transmitted to the display device 100 from an external device connected to HDMI is VendorCommand (CEC_HEADER + ⁇ VendorCommandWithId> + ⁇ VendorId> + ⁇ VendorOpCode> + [ UUID]).
  • the unique ID information transmitted to the display device 100 from an external device connected to a network may be provided in the form of a Network Packet (using the "MAC" field of the HTTP Header) transmitted from the external device to the display device 100. there is.
  • the above-described method can be implemented as processor-readable code on a program-recorded medium.
  • media that the processor can read include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage devices.
  • the display device described above is not limited to the configuration and method of the above-described embodiments, and the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made. It may be possible.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Selon un dispositif d'affichage et un procédé d'attaque associé décrits dans un mode de réalisation de la présente invention, lorsqu'un signal de commande est reçu en provenance d'un dispositif externe par l'intermédiaire d'une interface de dispositif externe, il est possible de déterminer de manière adaptative si le dispositif d'affichage doit traiter le signal de commande reçu, et ce en fonction d'un environnement de visionnement d'un utilisateur. Un dispositif d'affichage selon un mode de réalisation de la présente invention peut comprendre : une interface de dispositif externe ; un dispositif d'affichage servant à afficher un contenu ; et un dispositif de commande qui reçoit un signal de demande de mise hors tension en provenance d'un dispositif externe connecté par l'intermédiaire d'une interface de dispositif externe, et, s'il est déterminé que le contenu affiché sur le dispositif d'affichage n'est pas un contenu fourni par le dispositif externe, qui ignore et ne traite pas le signal de demande de mise hors tension reçu en provenance du dispositif externe.
PCT/KR2022/014763 2022-09-30 2022-09-30 Dispositif d'affichage et procédé de commande de dispositif d'affichage WO2024071485A1 (fr)

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